diff --git a/cnam/travaux/mémoire/thesis/settings.tex b/cnam/travaux/mémoire/thesis/settings.tex
index 0daa4fb..1dcfb2c 100644
--- a/cnam/travaux/mémoire/thesis/settings.tex
+++ b/cnam/travaux/mémoire/thesis/settings.tex
@@ -8,11 +8,13 @@
 \setmainlanguage{\mainlanguage}
 
 % language commands
+\newcommand{\ifstr}[4]{\expandafter\ifstrequal\expandafter{#1}{#2}{#3}{#4}}
 
 \newcommand{\bi}[2]{%
-\expandafter\ifstrequal\expandafter{\mainlanguage}{en}%
-{\ifstrempty{#1}{\ifstrempty{#2}{}{TRANSLATE\_ME!}}{#1}}%
-{\ifstrempty{#2}{\ifstrempty{#1}{}{TRADUISEZ\_MOI\_!}}{#2}}%
+\ifstr{\mainlanguage}{en}{\ifstrempty{#1}{TRANSLATE\_ME!}{#1}}{%
+\ifstr{\mainlanguage}{fr}{\ifstrempty{#2}{TRADUISEZ\_MOI\_!}{#2}}{%
+SHOULD\_NOT\_HAPPEN!%
+}}%
 }
 
 \newcommand{\en}[1]{\textenglish{#1}}